I got a mk3 16v a year ago, i have had a 2 or 3 incidents when there is sudden power loss for a split second, it's happened in third or forth gear between 3- 4k revs. It has'nt happened for about 6 months though, i thought it might get worse. I can't tell you what the problem is cos i dont know!? but if you find out, let me know. Maybe the conversion has exagerated the problem?